Handheld fan

Abstract

A handheld fan, comprising: an air supply portion (10) and a handheld portion (20), wherein the handheld portion (20) comprises a first outer housing (21) and a battery assembly (22) arranged in the first outer housing (21). The battery assembly (22) comprises a battery casing (221), and a first storage battery (222) and a second storage battery (223) which are arranged in the battery casing (221), the first storage battery (222) and the second storage battery (223) being connected in series by means of an electrical connector (224). According to the handheld fan, by providing two storage batteries in the battery assembly and connecting same in series, the battery capacity of the handheld fan is increased.

Description

A handheld fan Technical Field

[0001] The present application belongs to the technical field of fans, and in particular relates to a handheld fan. Background Art

[0002] As an emerging product, handheld fans are popular among consumers because they can generate natural and continuous cool breeze, are easy to carry, and have a simple and beautiful appearance. Especially in some places with hot weather, people often carry handheld fans with them so that they can fan themselves to cool down anytime and anywhere.

[0003] There are many types of handheld fans currently on the market that can meet people's basic needs. However, most of the existing handheld fans have small battery capacities and cannot meet people's demand for ultra-long battery life when using handheld fans.

[0004] Summary of the Invention

[0005] The main purpose of this application is to provide a handheld fan. By arranging a first battery and a second battery in a battery housing, the first battery and the second battery are connected in series through an electrical connector, thereby increasing the battery capacity of the handheld fan, so that when a user uses the handheld fan, the battery life can be longer, bringing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] This application will illustrate the embodiments with reference to the accompanying drawings. The drawings in this application are only used to describe the embodiments for illustrative purposes. Without departing from the principles of this application, those skilled in the art can easily make other embodiments according to the steps described below by following the description.

[0007] FIG1 is a schematic structural diagram of a handheld fan provided in an embodiment of the present application;

[0008] FIG2 is an exploded schematic diagram of a handheld portion provided in an embodiment of the present application;

[0009] FIG3 is an exploded schematic diagram of a battery assembly provided in an embodiment of the present application;

[0010] FIG4 is a schematic structural diagram of an electrical connector provided in an embodiment of the present application;

[0011] FIG5 is a schematic structural diagram of an air supply unit provided in an embodiment of the present application;

[0012] FIG6 is an exploded schematic diagram of an air supply unit provided in an embodiment of the present application;

[0013] FIG7 is a schematic structural diagram of an air supply assembly provided in an embodiment of the present application;

[0014] FIG8 is a schematic structural diagram of an air inlet cover provided in an embodiment of the present application;

[0015] FIG9 is a schematic structural diagram of a base provided in an embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0017] In order to make the description of the contents of this disclosure more detailed and complete, the following is an illustrative description of the implementation methods and specific examples of this application; however, this is not the only form of implementing or using the specific embodiments of this application. The implementation methods cover the features of multiple specific embodiments and the method steps and their sequence for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equal functions and step sequences. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0018] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0019] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" refers to two or more than two, and other quantifiers should be understood similarly. The preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In addition, the embodiments of the present application and the features in the embodiments may be combined with each other unless there is a conflict.

[0020] In order to solve the problem of small capacitance and inability to last for a long time when using a handheld fan, the present application provides a handheld fan. Please refer to Figure 1, which is a structural schematic diagram of a handheld fan provided in an embodiment of the present application. The handheld fan includes an air supply unit 10 and a handheld unit 20. Please refer to Figure 2, which is an exploded schematic diagram of a handheld unit provided in an embodiment of the present application. The handheld unit 20 includes a first outer shell 21 and a battery assembly 22 disposed in the first outer shell. Please refer to Figure 3, which is an exploded schematic diagram of a battery assembly provided in an embodiment of the present application. The battery assembly 22 includes a battery shell 221 and a first battery 222 and a second battery 223 disposed in the battery shell 221. The first battery 222 and the second battery 223 are connected in series via an electrical connector 224. An air supply assembly 17 is provided in the air supply unit 10. The air supply assembly 17 includes a drive motor 171 and an impeller assembly 172. The drive motor 171 includes a stator assembly and a rotor assembly. The number of pole pairs of the stator assembly is 3 pairs, and the number of slots of the stator assembly is 9 slots, or the number of pole pairs of the stator assembly is 4 pairs, and the number of slots of the stator assembly is 12 slots. The drive motor 171 is a three-phase motor and is electrically connected to the battery assembly 22. In the working circuit where the battery assembly 22 and the drive motor 171 are located, the operating voltage provided by the battery assembly 22 is 4-10.4V, the operating current is 0.1-1.5A, and the operating power is 0.6-11W. When the drive motor 171 drives the impeller assembly 172 to rotate, the operating speed of the impeller assembly 172 is 4000-18000r / min.

[0021] Specifically, in the embodiment of the present application, the first battery 222 and the second battery 223 in the battery housing 221 are connected in series through the electrical connector 224. Compared with using a single battery to power the handheld fan, the battery capacity is doubled, so that the user can enjoy a longer battery life when using the handheld fan, thereby providing a better user experience.

[0022] Further, please refer to Figure 4, which is a structural schematic diagram of an electrical connector provided in an embodiment of the present application. A circuit board 2241 is provided on the electrical connector 224, and the circuit board 2241 is electrically connected to the external circuit through a conductive wire 2242. The circuit board 2241 is electrically connected to the external circuit through a conductive wire 2242, and the external circuit charges the handheld fan to meet the requirement that the battery assembly in the handheld fan can be reused.

[0023] The end of the circuit board 2241 close to the conductive line 2242 is provided with a first conductive member 2243 connected to the positive pole of the first battery and a second conductive member 2244 connected to the negative pole of the second battery. The end of the circuit board 2241 away from the conductive line 2242 is provided with a third conductive member 2245 connected in series with the first battery 222 and the second battery 223. In the embodiment of the present application, the two batteries connected in series receive electrical energy from an external circuit and convert it into chemical energy of the battery. After the energy of the battery is consumed by discharge, it is restored by charging and can be discharged again, forming a charge and discharge cycle. The use of two batteries connected in series to receive electrical energy from an external circuit provides double the battery capacity, so that the handheld fan can have a longer battery life and is more suitable for carrying outside.

[0024] Furthermore, after the first battery 222 and the second battery 223 are connected in series, a first insulating sheet 225 is provided at one end close to the conductive wire 2242, and after the first battery 222 and the second battery 223 are connected in series, a second insulating sheet 226 is provided at one end away from the conductive wire 2242. In the embodiment of the present application, insulating sheets are provided at both ends of the batteries after they are connected in series, which can ensure insulation between the positive and negative electrodes of the batteries and prevent short circuits between the positive and negative electrodes of the batteries.

[0025] Furthermore, a main control chip 2246 is welded on the circuit board 2241. The main control chip 2246 is used to detect the current signal and voltage signal during the charging and discharging of the battery circuit, and to perform overvoltage and overcurrent protection on the circuit during the charging and discharging of the battery. In the embodiment of the present application, the main control chip detects the current signal and voltage signal input from the external power supply to the battery circuit in real time to prevent the external circuit from inputting an excessively high voltage signal. If the voltage on the output terminal of the external power supply exceeds the preset voltage of the handheld fan, the main control chip can control the conductive wire on the circuit board to disconnect, thereby cutting off the charging and discharging of the handheld fan and the external power supply.

[0026] Furthermore, the main control chip 2246 is also used to balance the current signal and voltage signal of the battery circuit during charging and discharging. The main control chip 2246 balances the current signal and voltage signal of the first battery 222 and the second battery 223 by adjusting the resistance value of the internal resistance. In the embodiment of the present application, the main control chip is also used to balance the current signal and voltage signal of the battery circuit during charging and discharging. When the battery assembly contains more than two batteries, the current signal output by each battery may be different during the use of the handheld fan, which may cause the overall working efficiency of the handheld fan to be reduced and the life of the handheld fan to be shortened. If each battery can share the load evenly, the life of the battery assembly will be extended.

[0027] Further, please refer to Figure 5, which is a structural schematic diagram of an air supply unit provided in an embodiment of the present application. The air supply unit 10 includes a second outer shell 11 and an air inlet cover 12 and an air nozzle 13 that are clamped to the second outer shell 11. The air inlet cover 12 is arranged on one side of the air inlet, and the air nozzle 13 is arranged on one side of the air outlet. In the embodiment of the present application, the air nozzle 13, the outer shell 11 and the air inlet cover 12 in the air supply unit 10 are arranged to be detachably connected, and disassembly is relatively simple, which facilitates timely cleaning of components such as the air nozzle 13, the outer shell 11 and the air inlet cover 12.

[0028] Further, please refer to FIG6 , which is an exploded schematic diagram of an air supply unit provided in an embodiment of the present application. A second inner shell 14, an air inlet bracket 15 and an air outlet guide 16 are provided within the second outer shell 11. One end of the air inlet bracket 15 is engaged with the second inner shell 14, and the other end of the air inlet bracket 15 is engaged with the air inlet cover 12. One end of the air outlet guide 16 is engaged with the second inner shell 14, and the other end of the air outlet guide 16 is engaged with the air nozzle 13. In the embodiment of the present application, an air nozzle 13 is provided at the air outlet of the handheld fan, which can be used to clean dust from items such as keyboards nearby, and can also properly guide the wind in the air duct of the air supply component, making the air outlet of the handheld fan more uniform, thereby having higher air outlet efficiency and making the air outlet smoother. The air outlet guide 16 is provided with guide vanes, and the number of the guide vanes is 5 or 6.

[0029] Further, please refer to Figure 7, which is a schematic diagram of the structure of an air supply assembly provided in an embodiment of the present application. An air supply assembly 17 is disposed within the second inner housing 14. The air supply assembly 17 includes a drive motor 171 and an impeller assembly 172. The impeller assembly 172 includes a cylindrical cavity 1721 and blades 1722 wound around the outside of the cylindrical cavity 1721. A motor bearing 173 is disposed within the cylindrical cavity 1721, and the motor bearing 173 is sleeved around the outside of the drive motor 171. In another embodiment, the impeller assembly 172 may also be a diagonal flow fan, comprising five blades 1722.

[0030] Specifically, in the embodiment of the present application, when the user uses the handheld fan, the blades 1722 rotate under the drive of the drive motor 171, guiding the wind from the air inlet cover 12 into the air duct space of the air supply assembly 17. The user can hold the handheld fan to blow the wind toward the part that needs to be cooled, thereby achieving rapid cooling and improving human comfort.

[0031] Further, please refer to Figure 8, which is a structural schematic diagram of an air inlet hood provided in an embodiment of the present application. The air inlet hood 12 includes a filter 121 and a fixing ring 122 clamped to the periphery of the filter 121. The filter 121 is in the shape of a regular hexagon. In the embodiment of the present application, a filter 121 is provided in the air inlet hood 12. The filter 121 is a metal filter, and the shape of the metal filter is a regular hexagon. Setting the shape of the metal filter to a regular hexagon can ensure that the air inlet area of ​​the air inlet hood can be maximized under the same filter area.

[0032] Further, please refer to Figure 9, which is a structural schematic diagram of a base provided in an embodiment of the present application. A base 30 is installed at the end of the handheld part 20, and the base 30 includes a bottom plate 31, a side wall structure 32 connected to the edge of the bottom plate 31, and a base mounting shaft 33 engaged with the side wall structure 32 and the bottom plate 31. The side wall structure 32 is provided with a first groove 321 engaged with the base mounting shaft 33 and a second groove 322 engaged with the bottom plate protrusion 311. In the embodiment of the present application, a base is installed at the end of the handheld part of the handheld fan. When indoors, the handheld fan can also be placed on the desktop, which is more convenient when using the handheld fan.

[0033] The present application provides a handheld fan comprising an air supply unit and a handheld unit. The handheld unit comprises a first outer shell and a battery assembly disposed within the first outer shell. The battery assembly comprises a battery housing and a first battery and a second battery disposed within the battery housing. The first battery and the second battery are connected in series via an electrical connector. The handheld fan provided by the present application increases the battery capacity of the handheld fan by providing two batteries connected in series within the battery assembly. This allows the user to enjoy a longer battery life when using the handheld fan, providing a better user experience.

[0034] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above embodiments merely represent preferred embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A handheld fan, wherein: include: It comprises an air supply unit (10) and a handheld unit (20), wherein the handheld unit (20) comprises a first outer shell (21) and a battery assembly (22) arranged in the first outer shell; The battery assembly (22) comprises a battery housing (221) and a first storage battery (222) and a second storage battery (223) disposed in the battery housing (221), wherein the first storage battery (222) and the second storage battery (223) are connected in series via an electrical connector (224); An air supply assembly (17) is provided in the air supply portion (10), and the air supply assembly (17) comprises a driving motor (171) and an impeller assembly (172); The driving motor (171) comprises a stator assembly and a rotor assembly, wherein the number of pole pairs of the stator assembly is 3 pairs, and the number of slots of the stator assembly is 9 slots, or the number of pole pairs of the stator assembly is 4 pairs, and the number of slots of the stator assembly is 12 slots; The driving motor (171) is a three-phase motor. The driving motor (171) is electrically connected to the battery assembly (22). In the working circuit where the battery assembly (22) and the driving motor (171) are located, the working voltage provided by the battery assembly (22) is 4-10.4V, the working current is 0.1-1.5A, and the working power is 0.6-11W. When the driving motor (171) drives the impeller assembly (172) to rotate, the working speed of the impeller assembly (172) is 4000-18000r / min.

2. The handheld fan according to claim 1, wherein: The electrical connector (224) is provided with a circuit board (2241), and the circuit board (2241) is electrically connected to an external circuit via a conductive wire (2242); The end of the circuit board (2241) close to the conductive line (2242) is provided with a first conductive member (2243) connected to the positive electrode of the first battery and a second conductive member (2244) connected to the negative electrode of the second battery, and the end of the circuit board (2241) away from the conductive line (2242) is provided with a third conductive member (2245) connected in series with the first battery (222) and the second battery (223).

3. The handheld fan according to claim 2, wherein: After the first storage battery (222) and the second storage battery (223) are connected in series, a first insulating sheet (225) is provided at one end close to the conductive line (2242); and after the first storage battery (222) and the second storage battery (223) are connected in series, a second insulating sheet (226) is provided at one end away from the conductive line (2242).

4. The handheld fan according to claim 2, wherein: A main control chip (2246) is welded on the circuit board (2241), and the main control chip (2246) is used to detect current signals and voltage signals when the battery circuit is charged and discharged.

5. The handheld fan according to claim 4, wherein: The main control chip (2246) is also used to balance the current signal and the voltage signal of the battery circuit during charging and discharging. The main control chip (2246) balances the current signal and the voltage signal of the first battery (222) and the second battery (223) by adjusting the resistance value of the internal resistance.

6. The handheld fan according to claim 1, wherein: The air supply unit (10) comprises a second outer shell (11) and an air inlet cover (12) and an air nozzle (13) which are clamped to the second outer shell (11); the air inlet cover (12) is arranged on one side of the air inlet, and the air nozzle (13) is arranged on one side of the air outlet.

7. The handheld fan according to claim 6, wherein: The second outer shell (11) is provided with a second inner shell (14), an air inlet bracket (15) and an air outlet air guide (16) which are clamped with the second inner shell (14); one end of the air inlet bracket (15) is clamped with the second inner shell (14); the other end of the air inlet bracket (15) is clamped with the air inlet cover (12); one end of the air outlet air guide (16) is clamped with the second inner shell (14); the other end of the air outlet air guide (16) is clamped with the air nozzle (13); the air outlet air guide (16) is provided with guide vanes, and the number of the guide vanes is 5 or 6.

8. The handheld fan according to claim 7, wherein: The impeller assembly (172) comprises a cylindrical cavity (1721) and blades (1722) wound around the outside of the cylindrical cavity (1721); a motor bearing (173) is provided in the cylindrical cavity (1721); and the motor bearing (173) is sleeved on the outside of the drive motor (171).

9. The handheld fan according to claim 6, wherein: The air inlet cover (12) comprises a filter screen (121) and a fixing ring (122) clamped to the periphery of the filter screen (121); the filter screen (121) is in the shape of a regular hexagon.

10. The handheld fan according to claim 1, wherein: A base (30) is installed at the end of the handheld portion (20), and the base (30) comprises a bottom plate (31), a side wall structure (32) connected to the edge of the bottom plate (31), and a base installation shaft (33) clamped with the side wall structure (32) and the bottom plate (31), and the side wall structure (32) is provided with a first groove (321) clamped with the base installation shaft (33) and a second groove (322) clamped with the bottom plate protrusion (311).

11. The handheld fan according to claim 1, wherein: The impeller assembly (172) is a diagonal flow fan, and the impeller assembly (172) includes five blades (1722).

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